[CMake] Unnecessary ordering breaks existing CMakeLists.txt

[Brad King]

Dataflow wrote:
> Hi Brad,
> 
> 1) While choosing libraries to be linked for debug/release, I am getting the
> following error:
> ----
> It is impossible to order the linker search path in such a way that
> libraries specified as full paths will be picked by the linker.
> Directories and libraries involved are:
> Directory: i:\Projects\dcls\winbuild\Debug contains:
> Library: i:/Projects/dcls/winbuild/Release/dfslib.lib
> 
> Directory: i:\Projects\dcls\winbuild\Release contains:
> Library: i:/Projects/dcls/winbuild/Debug/dfslib.lib
> ----
> This is confusing at best!! How does the Release directory contain the debug
> lib and vice varsa?
> 
> Is this because (as per windows convention) both the libs use the same name
> 'dfslib.lib'? (It is a plain static library.)

Yes, and because per-configuration subdirectories are automatically
considered during linking.  Try specifying just

  i:/Projects/dcls/winbuild/dfslib.lib

as the library without any per-configuration options.  This will
automatically get split into something like

  -Li:/Projects/dcls/winbuild/$(OutDir) -Li:/Projects/dcls/winbuild
dfslib.lib

BTW, was the other project built by CMake too?  If so there are
conventions already established to export it for use by find_package in
another project.  It is covered in the  "Mastering CMake" book.

> 2) Can I suggest to change the 'Error' dialog (of ccmake) to use a read-only
> edit field instead of a static field, so that the error messages can be
> easily copied for pasting... That will avoid having to type the long error
> messages (such as above) by hand.

Sure:

http://www.cmake.org/Bug

> 3) The brain teaser..
> Debug = debug
> Release = release
> MinSizeRel = optimized
> RelWithDebInfo = ????

Eventually one will be able to specify a library for each configuration,
but for now "debug" is Debug and "optimized" is all others.

-Brad